The calculated distance (air line) between Mondim de Basto and Santo António dos Olivais is approximately 86 miles respectively 138 kilometers.
By car or train, the actual journey to Santo António dos Olivais is certainly longer, as only the direct route (as the crow flies) between Mondim de Basto and Santo António dos Olivais has been calculated here.
Air line (approximately)
138 kilometers
74 nautical miles